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The MR-7 Series LVIT (Linear Variable Inductance Transducer) Position Sensors from Alliance Sensors Group has been designed as an alternative to magnetostrictive sensors and has more robust construction and a lower cost of ownership. The unit can be port mounted in industrial or mobile hydraulic cylinders and pneumatic actuators.
These MR-7 Series sensors are based on a proprietary contactless inductive sensing technology that employs a 7 mm diameter probe with a shorter stroke-to-length ratio than most other technologies, and uses a gun drilled hole in the cylinder rod for sensing the rod position rather than requiring a ring magnet assembly.
An MR-7 has a 1.75 inch (44.5 mm) hex sensor head with a male o-ring port thread, so it can be mounted in the same SAE dash 8 or 18 mm 0-ring port as magnetostrictive sensors. Because they are contactless, MR-7 Series sensors do not wear out and have no output signal deterioration over the life of the sensors, and because it uses an inductive coil, an ME-7 sensor can withstand much greater shock and vibrations than other technologies. A very useful element of the MR-7 sensors is ASG’s proprietary SenSet feature whereby a sensor’s analog output can be adjusted in the field after installation to match the range of motion of the cylinder rod. For more information see the technical data sheet below.
| Series | Output | Probe Diameter | Range (mm) | Port Thread | Termination | Output | Housing Material | Bore Size | Bore Material |
| MR | X- | XX- | XXX- | XX- | XX- | XX- | X- | XX- | XX |
| E- voltage | 7- 7 mm | 025 | 08- 3/4-16 | 00- 1 m cable | 05- 0.5-4.5 VDC | A- Aluminum | 08 - 8 mm (20-100 ranges) | AL- Aluminum | |
| I- current | 050 | 18- M18 | 01 - 5-pin M12 | 06- 4.5-0.5 VDC | S- 300 Series SS | 95 - 9.5 mm (125-200 ranges) | AS- Alloy Steel | ||
| 075 | 03 - 5-pin mini 7/8 | 10- 0-10 VDC | 11 - 11 mm (225-600) | CS- Carbon Steel | |||||
| 100 | 11- 10-0 VDC | SS- Stainless Steel | |||||||
| 125 | 20- 4-20 mA | ||||||||
| 150 | 21- 20-4 mA | ||||||||
| 175 | 50- 0-5 VDC | ||||||||
| 200 | 51- 5-0 VDC | ||||||||
| 225 | |||||||||
| 250 | |||||||||
| 300 | |||||||||
| 350 | |||||||||
| 400 | |||||||||
| 450 | |||||||||
| 500 | |||||||||
| 600 |
| File | Date | Size | |
|---|---|---|---|
| LVIT MR-7 Series datasheet (English) | 14-06-2018 | 776KB | |
| LVIT MR-7 Series outline drawing (English) | 14-06-2018 | 489KB | |
| MR-7 - Applications overview (English) | 14-06-2018 | 706KB | |
| Quick start guide - Installation of port mounting in-cylinder position sensors (English) | 14-06-2018 | 308KB |
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